Find the solution of y = 4x + 2 for x = -5. A. (-5, -18) B. (-5, 22) C.

Question

Find the solution of y = 4x + 2 for x = -5.

A.
(-5, -18)

B.
(-5, 22)

C.
(-18, -5)

in progress 0
Thu Hương 3 years 2021-08-17T09:33:28+00:00 1 Answers 9 views 0

Answers ( )

  1. thienhuong
    0
    2021-08-17T09:35:12+00:00
    Reply

    Answer: THE ANSWER WOULD BE A. (-5, -18)

    Notice how y=4x%2B2 is in slope-intercept form y=mx%2Bb where m is the slope and b is the y-intercept.

    So this shows us that the slope is m=4 and the y-intercept is b=2 which is the point (0,2)

    You can always plot an equation like this to find intercepts

    and slope. Each point requires an x and a y. My

    way is to make x+=+0 and find y,

    then I make y+=+0 and find x

    y+=+4x+%2B+2

    y+=+4%2A0+%2B+2 solve for y

    y+=+2

    the point is (0,2)

    then,

    0+=+4x+%2B+2 solve for x

    subtract 2 from both sides

    4x+=+-2

    x+=+-%281%2F2%29

    the point is (-%281%2F2%29,0)  

    Once you have any two points, you can draw the line by connecting them

    When the equation is in the form

    y+=+mx+%2B+b

    m = slope

    b = y-intercept

    So, your equation y+=+4x+%2B+2

    m+=+4 (slope)

    b+=+2 (y-intercept)

    Step-by-step explanation:

    Solve for the first variable in one of the equations, then substitute the result into the other equation.

    Point Form:  (

    −

    5

    ,

    −

    18

    )

    Equation Form:  x

    =

    −

    5

    ,

    y

    =

    −

    18

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )