Verified answer

1)

x intercepts, or when the graph crosses the x intercept, happen when y = 0, so

y = 2x² - 10x + 8

0 = 2x² - 10x + 8

0 = (2x -2)(x - 4)

For that to be true, x = 1 or 4, so the x intercepts are (1, 0) & (4, 0)

y intercepts happen when x = 0, so

y = 2(0) - 10(0) + 8, so y = 8, so the y intercept is (0,8)

2.

x² + x = 20

x² + x - 20 = 0

(x + 5)(x - 4) = 0

For this to be true, x must = -5 or 4

c

d