Please help me with this problem?

On the grid are 8 points from two different functions.
A certain linear function passes through exactly 4 of the points shown.
A certain quadratic function passes through the remaining 4 points.

for the linear function:
write the coordinate pairs of its four points.
draw the line on the grid.
write an equation for the function.
Please show me how you did this.enter image source here

1 Answer
Apr 24, 2018

See below

Explanation:

above image + microsoft paint talent

Ok so I whipped this up super quick, red is quadratic, blue linear

Linear:
passes through (2,9) , (3,7) , (4,5) , (5,3)
#y=-2x=13#

Quadratic:
pass through (1,5) , (2,8) , (3,9) , (4,8)
#y=(x-3)^2+9#
(its -3 bc it moves right, +9 bc vertex is moved up 9)
:)