Which equation matches the function shown in the graph? a) y = x + 4 b) y = 4x + 2 c) y = 2x + 4 d) y = -2x + 4

Slope-intercept form: y = mx + b  (m is the slope, b is the y-intercept or the y value when x = 0 --> (0 , y))

To find the slope(m), you can use the slope formula, then you can find and plug in 2 points into the equation

  (x₁ , y₁) is the first point you have on the left, (x₂ , y₂) is the point to the right of the first point

You can also find the slope by:

"rise" is the number of units you go up (positive number) or down (negative number), and "run" is the number of units you go to the right.  For example if your slope is -2, you go down 2 units and to the right 1 unit.  

So you can just look at the graph and see how many units a point goes up/down and to the right to get to the next point

To find the y-intercept, find the point where the line crosses through the y-axis, or (0, y)

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.

a is the right answer