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olya-2409 [2.1K]
3 years ago
12

The slope, m, of a linear equation can be found using the formula m = StartFraction y 2 minus y a Over x 2 minus x 1 EndFraction

., where the x- and y-values come from two ordered pairs, and (x1, y1) and (x2, y2).
What is an equivalent equation solved for y2?

y2 = mx2 – x1 + y1
y2 = mx2 – x1 – y1
y2 = m(x2 – x1) + y1
y2 = m(x2 – x1) – y1
Mathematics
2 answers:
ExtremeBDS [4]3 years ago
3 0

Answer: Third option.

Step-by-step explanation:

By definition, the slope of a line can be calculated with the following formula:

m=\frac{y_2-y_1}{x_2-x_1}

Since you need to solve for y_2 to find an equivalent expression, you can apply these steps:

1. You must multiply both sides of the equation by (x_2-x_1):

m(x_2-x_1})=(\frac{y_2-y_1}{x_2-x_1})(x_2-x_1})\\\\m(x_2-x_1})=y_2-y_1

2. Finally, you must add y_1 to both sides of the equation:

m(x_2-x_1})+y_1=y_2-y_1+y_1\\\\y_2=m(x_2-x_1})+y_1

vazorg [7]3 years ago
3 0

Answer:

C.y2 = m(x2 – x1) + y1

Step-by-step explanation: Just took the test and edg and got 100%, make sure to rate 5. and make me. branliest pls?

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Sistema de ecuaciones.5x+2y=-152x-2y=-6
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Tnemos el sisema de ecuaciones:

\begin{gathered} 5x+2y=-15 \\ 2x-2y=-6 \end{gathered}

Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}

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