y-intercepts
y = mx + b
y = mx + k
y = mx + c
What are b, k, and c?
The y-intercepts
A line L2 is parallel to y = 3x - 5...
What is the gradient of L2?
m = 3
What is this form called?
ax + by + d=0
Standard (General) Form
In your own words, what is the midpoint of two points?
Good job! :)
What are the first three digits of pi?
3.14
In your own words, what is the y-intercept of a line?
Awesome! :)
A line L3 is perpendicular to y = 3x - 5...
What is the gradient of L3?
m = -1/3
This equation, y - 3x + 5 = 0 is in standard form.
Write the equation in gradient intercept form.
y = 3x - 5
For the following line, find the x-intercept:
y−3x+5=0
x = 5/3
What are the first four digits of pi?
3.141
You are given three points A(0,5), B(3,0), and C(6,6). Based on this information, what is the y-intercept?
b, c, or k = 5
Two points A(-8,0) and B(0,4) are given on a line. Calculate the gradient of the line.
m = 1/2 or m = 0.5
Find the equation of L2 if m = 3 and L2 intersects the y-axis at P(0,2). Give your answer in the form y = mx + c
y = 3x + 2
P is (-4,6) and Q is (5,1). M is the midpoint of PQ. Find the coordinates of M.
(1/2 , 7/2)
What are the first five digits of pi?
3.1415
L1 has equation y = x/3 - 5. What is the y-intercept?
c = -5
Which line equation reveals the gradient of the line?
Gradient intercept form
The gradient of a line perpendicular to L1 is 1/2. If A(2,-1) is a point on L1, what is the equation for L1 in gradient intercept form?
y = -2x + 3
A is (0,x) and B is (8,0). M is (4,-1) and it is the midpoint of AB. What does x equal?
x = -2
Seven digits of pi?
3.141592
You are given a point on L1, A(2,4) and the slope of L1 m = -3. Find the y-intercept.
c = 10
What is the point-gradient form of a line used for? In what situation would we use this equation?
We could use this equation when we know a point and a gradient. Hence, the name: point-gradient form.
The gradient of a line perpendicular to L1 is 1/3. What is the equation of L1, in standard form, if A(2,4) is a point on L1?
3x + y - 10 = 0
Draw the symbol for the set of all integers.
Almost a Z...
Wild card question: List as many digits as you can for points...
3.14159265358979323846264338327950288419716939937510