What is the solution set of the following equation? -8x + x + 15 = -7x + 12 {all reals} Ø { 1/7 }

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b

b

step-by-step explanation:

b. b < 1 might be the correct answer