Points on a Line with No Graph

Is (1, 2) a solution to the linear equation 2x + 5y = 12?

• Yes

• No

Points that are___________ the line are solutions to a linear equation.

• On

• Off

Given an equation with x and y and a pair of coordinate points, how do you know if the points are a solution?

• Plug them into the equation to see if they make the equation true.

• Guess.

• You will never know if it is true.

• Ask your teacher.

Solutions to linear equations are....

• ordered pairs (x,y)

• slope

• y-intercept

Tags

CCSS.8.EE.C.8A

The tables of ordered pairs represent some points on the graphic lines of f and g.

What systems of equations represent line f and g?

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is an equation for the line that passes through the coordinates (-1,2) and (7,6)  ?

• y = (1/2)x + 2.5

• y = (1/2)x - 5

• y = 3x + 4

• y = -3x + 4

Write the equation of the line that goes through the points (0,2) and (4,-4).

• -2

• 3/2

• +4

• -4

• +2

Write an equation of the line that passes through (–2, 8) and (–4, –4).

Mathematical Equivalence

ON

Write an equation of the line that passes through the given points (2, 7) and (0, -5).

Mathematical Equivalence

ON

Write the equation of the line that passes through the points (0, -5) and (4, 3)

• y=2x-5

• y=1/2x-5

• y=2x+5

• y=1/2x+5