SAT Math / High Yield Lessons
Change the numbers in an equation and watch what happens to its graph. Learn common linear, quadratic, exponential, and circle forms, connect them to word problems, then practice in mixed questions and timed Bluebook sets.
Use an equation’s form to find a slope, a vertex, an intercept, or a circle’s radius. Some values are shown directly; others need a calculation.
One parabola is written two ways. In vertex form, y equals (x minus 1) squared minus 4, the numbers 1 and negative 4 light up with the lowest point, (1, negative 4). In factored form, y equals (x plus 1)(x minus 3), the crossings at negative 1 and 3 light up. Next, clicking the 4 in y equals 4 times 2 to the x lights the point where the curve starts, (0, 4). Dragging a slider takes a circle's radius squared from 4 to 9, until the circle matches a dashed goal of radius 3. Clicking the words grows 3 inches each week, in a story about a sunflower, lights the 3 in H equals 3w plus 8 and the line's step of 3 up for each 1 across. Finally, answer where the graph of y equals (x plus 3)(x minus 5) crosses the x-axis, using the buttons after the picture.
