Figure out by using substitution

5x + 2 y = 7
4x + y = 8​

(3, - 4 )

Step-by-step explanation:

Given the 2 equations

5x + 2y = 7 → (1)

4x + y = 8 → (2)

Rearrange (2) expressing y in terms of x by subtracting 4x from both sides

y = 8 - 4x → (3)

Substitute y = 8 - 4x into (1)

5x + 2(8 - 4x) = 7 ← distribute and simplify left side

5x + 16 - 8x = 7

16 - 3x = 7 ( subtract 16 from both sides )

- 3x = - 9 ( divide both sides by - 3 )

x = 3

Substitute x = 3 into (3) for corresponding value of y

y = 8 - 4(3) = 8 - 12 = - 4

solution is (3, - 4 )

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

idkit the do u know da way and ligma consumed ninja

step-by-step explanation: