The following linear system is to be solved using the elimination method. 5x + 7y=0 x+ 4y= -1 the first step would be to A. add the equations
B. subtract the equations
C. multiply the first equations by 5
D. multiply the second equation by 5

D

Step-by-step explanation:

bc u change the positive 5 into negative 5 and add to 4y but then u minus the -5 from 4 = -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

look at photo