How do you calculate the y-intercept of a line written in Standard Form? The y-intercept is the coefficient of the y-term in the equation.
Convert to Slope-Intercept Form and use the value of m.
Set y = 0 and solve for x.
Set x = 0 and solve for y.

y = mx + b

m = slope

b = y - intercept

If you are trying to find the equation of a line that runs through a specific point, then point the (x, y) values into your equation. Then you can either find your slope or y-intercept.

Step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116