Question

What is the y intercept of a line that has a slope of -3 and passes through the point (2,7)
a.-19
b.1
c.13
d.23?

Answer 1

y = mx + b
slope(m) = -3
(2,7)...x = 7 and y = 2
now we sub and fund b, the y int
2 = -3(7) + b
2 = -21 + b
2 + 21 = b
23 = b <== ur y int