Solve using substitution. x + y = –13
3x − 4y = 10

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Please help i need this badly. Awarding 30 points tysm.

In one of the equations, solve for the first variable, then insert the answer into the other equation.

Point Form: (-6, -7)

Equation Form: x= -6, y= -7

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