Algebra EOC KEY Formulas

Features of Linear Functions

• A horizontal line is not a function.

• Non-vertical straight line

• y = x is the parent linear function

• the parent function passes through the origin

Point Slope Form

• y = mx + b

• Ax + By = C

Slope Intercept Form

• y = mx + b

• Ax + By = C

Standard Form

• y = mx + b

• Ax + By = C

Which form to use to find the "b" if you already have a slope and a point (x, y)

• y = mx + b

• Ax + By = C

If the original slope is 3, find the perpendicular slope:

• 1/3

• 3/1

• -1/3

• -3

If the original slope is 3, find the parallel slope:

• 1/3

• 3/1

• -1/3

• -3

Jess has no more than five hats.

• h < 5

• h ≤ 5

• h ≥ 5

• h > 5

Kay has at least $23.

• x ≤ 23

• x < 23

• x ≥ 23

• x >

Choose the correct type of circle and correct type of line for: > or <

• open circle

• closed circle

• solid line

• dashed line