Question

The graph below shows the solution to which system of equations?

linear functions y equals negative 2 x plus 4 and y equals x muns 2


A. y = x + 2
y = -2x + 4
B. y = -x - 2
y = 2x + 4
C. y = x - 2
y = -1/2 x + 4
D. y = x - 2
y = -2x + 4
https://roads.advancedacademics.com/contentserver/content/roadssection/307143//2429_algib_solvinglinearsystemsbygraphing_artwork_line24.jpg

Answer 1

look at the graph and label some coordinates, substitute those x and y values into these equations to see which works for those coordinates and that will give you your answer

y=x-2
and
y=-2x+4

Answer 2

thank you

Answer 3

you can tell if a graph has a negative or positive gradient by the direction it is going in
if it goes top left to bottom right then it is negative
therefore the coefficient of x must be negative

if it is going from top right to bottom left then it is positive and the coefficient is positive

you can find the y intercept which is where it crosses y

you can work out the gradient

then you can work out the function from that,

Answer 4

ohh ok