2C writing linear equations

Which is an example of a linear equation?

Answer explanation

linear equations do not have exponents.

Tags

2C

Which equation represents slope-intercept form?

• The y-value

• The slope

• The x-value

• The y-intercept

• The y-value

• The slope

• The x-value

• The y-intercept

What is the equation of a line with a slope of 4 and a y-intercept of 2?

• y = -4x + 2

• y = -2x + 4

• y = 4x + 2

• y = 2x + 4

Which equation below would you use in Desmos to help you write a linear function?

2023 STAAR Question

The table represents some points on the graph of a linear function.

Which function represents the relationship?

Answer explanation

One method to solve would be to use desmos.

2019 STAAR Question

The table shows the amount of pet food in cups remaining in an automatic feeder as a function of the number of meals the feeder has dispensed.

Based on the table which function models the situation?

Answer explanation

One method is to use desmos.

2023 STAAR Question

Printer ink costs $18.99 per cartridge. The company that sells the ink cartridges charges a flat rate shipping fee of $7.95, no matter the number of cartridges purchased in a single order.

Which value represents the slope (rate of change)?

• $18.99

• $7.95

2023 STAAR Question

Printer ink costs $18.99 per cartridge. The company that sells the ink cartridges charges a flat rate shipping fee of $7.95, no matter the number of cartridges purchased in a single order.

Which value represents the y-intercept (initial amount)?

• $18.99

• $7.95