Solve the equation: 1/2x^2 + x when x = 4

12

Step-by-step explanation:

1/2(x^2 + x)        x=4

1/2(4^2+4)

1/2(16+4)

1/2 x 20

10

The equation of the line is y = 2x - 6

Step-by-step explanation:

Put the equation into the point-slope formula (Below). You'll get y - 4 = 2 * (x - 5), which is equal to y - 4 = 2x - 10. You add 4 on both sides and then get y = 2x - 6.

Point-Slope formula:

y - y coordinate = slope * (x - x coordinate)

Y coordinate: 4

X coordinate: 5

Slope (m) = 2