Straight line graphs

What is the equation of the line

• y = $-\frac{1}{2}x\ +\ 2$

• y = $2x\ +\ 2$

• y = $\frac{1}{2}x\ +\ 2$

• y = $-2x+4$

Find the equation of the line passing through

•  $y=\frac{1}{4}x+5$  

•  $y=2x+1$  

•   $y=4x-7$  

•  $y=3x+5$  

What is the definition of

Gradient of a Line?

• It is the measure of degrees of a line.

• It is the measure of length of a line.

• It is the measure of steepness of a line.

• It is the measure of strength of a line.

Tags

CCSS.HSS.ID.C.7

Does gradients have any units?

• Yes

• No

Tags

CCSS.HSN.Q.A.1

When the line is upward sloping, the gradient is ___________ .

• Positive

• Negative

• Zero

• Undefined

When the line is downward sloping, the gradient is ____________ .

• Positive

• Negative

• Zero

• Undefined

When the line is a horizontal (flat), the gradient is _____________ .

• Positive

• Negative

• Zero

• Undefined

What is the gradient of this line?

• 2

• -2

• 1/2

• -1/2

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.C.7

Which line is parallel to x-axis?

• AB

• CD

When two lines are parallel, they have the same gradient.

• True

• False