https://pipmath.app/blog/ Math explained visually, from the makers of Pip: Math Adventure. en https://pipmath.app/blog/how-to-solve-a-linear-equation/ https://pipmath.app/blog/how-to-solve-a-linear-equation/ Fri, 23 Oct 2026 08:00:00 GMT Undo in reverse order and do the same to both sides. Worked examples, x on both sides, and why the moves keep the answer: two lines that still cross. https://pipmath.app/blog/horizontal-and-vertical-lines-slope/ https://pipmath.app/blog/horizontal-and-vertical-lines-slope/ Fri, 23 Oct 2026 08:00:00 GMT A flat line has slope 0, an upright line has undefined slope. Why they differ, how to tell y = 3 from x = 3, and a live graph. https://pipmath.app/blog/equation-of-a-line-from-two-points/ https://pipmath.app/blog/equation-of-a-line-from-two-points/ Fri, 23 Oct 2026 08:00:00 GMT Slope first, then b. Three worked examples, a check with the other point, and a live graph where you move the second point. https://pipmath.app/blog/graph-a-line-from-its-equation/ https://pipmath.app/blog/graph-a-line-from-its-equation/ Fri, 23 Oct 2026 08:00:00 GMT Start at b on the y-axis, then step by the slope. Three worked examples, including a fraction slope and an equation that needs rearranging. https://pipmath.app/blog/slope-intercept-form/ https://pipmath.app/blog/slope-intercept-form/ Fri, 23 Oct 2026 08:00:00 GMT y = mx + b: m is the slope, b is where the line starts on the y-axis. Read it, write it and rearrange to it, with a live graph. https://pipmath.app/blog/find-slope-from-two-points/ https://pipmath.app/blog/find-slope-from-two-points/ Fri, 23 Oct 2026 08:00:00 GMT The slope formula, step by step, with a live graph, worked examples, the mistakes to avoid and three practice questions. https://pipmath.app/blog/what-is-slope/ https://pipmath.app/blog/what-is-slope/ Fri, 23 Oct 2026 08:00:00 GMT Slope is how steep a line is and which way it leans. Rise over run, with positive, negative and zero slope and a live graph. https://pipmath.app/blog/domain-and-range-explained/ https://pipmath.app/blog/domain-and-range-explained/ Fri, 23 Oct 2026 08:00:00 GMT The domain is the inputs a function accepts, the range is the outputs it gives. Find both from a list, a graph and a rule. https://pipmath.app/blog/what-does-f-of-x-mean/ https://pipmath.app/blog/what-does-f-of-x-mean/ Fri, 23 Oct 2026 08:00:00 GMT f(x) is the output for the input x. How to evaluate a function from a rule, a table and a graph, and how to work backwards. https://pipmath.app/blog/what-is-a-function/ https://pipmath.app/blog/what-is-a-function/ Fri, 23 Oct 2026 08:00:00 GMT A function is a rule with one answer for every input. The machine, the table, the graph and the vertical line test, with a live graph.