STAAR Review Day 4 Writing Functions

What is the standard form of a linear equation?

• Ax + By = C

• y = mx + b

When do two linear equations have the same slope?

• Parallel: When two linear equations have the SAME slope. They will never intersect.

• Perpendicular: When two linear equations have slopes that are negative reciprocals of each other.

• Coinciding: When two linear equations have the same slope and the same y-intercept.

• Intersecting: When two linear equations have different slopes.

What is the vertex form of a quadratic equation?

• a(x - h)² + k, where h and k are the vertex (h, k)

• ax² + bx + c, where a, b, and c are constants

• (x - p)(x - q), where p and q are the roots

• y = mx + b, where m is the slope and b is the y-intercept

The table represents some points on the graph of a linear function. Which function represents this relationship?

• c = 26.94t

• c = 18.99t + 7.95

• t = 26.94c

• t = 18.99c + 7.95

Which equation is best represented by this graph?

Based on the table, which function models this situation?

• f(n) = -3n + 24

• f(n) = -3n + 64

At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2 jars from 1 of the boxes. Which function shows the relationship between y, the total number of jars of tomato sauce remaining in the pantry, and x, the number of boxes in the pantry?

• y = 8x + 6

• y = 8x

• y = 8x - 2

• y = 6x

Which equation is best represented by this graph?

• y + 7 = -3(x - 4)

• y + 1 = -3(x + 2)

• y - 4 = 3(x + 7)

• y - 2 = 3(x - 1)