Gridlines orders and straight line Graphs Christo Muller

Gridlines, orders and straight line Graphs. Christo Muller -211150681 Eldrico Gosh - 211086924

Coordinate Gird The vertical axis is called the y-axis. Where the x-axis and y-axis intersect is called the origin. Two perpendicular lines, or axes, labeled like number lines. The horizontal axis is called the x-axis.

Ordered pairs are written in parentheses (X, Y) (3, 4) The numbers on the coordinate grid are used to locate points These points are also called an ordered pair of numbers

Point an ordered paired for (2, 5) ed er d r o e • in th e u l va X ue. l r a u v o nd y n your y i f t s Fir the d n a → pair nt → i o ? s p ur thi o e y k i t l • Plo yours look oes D • (2, 5)

Plot ordered pair (4, 3) e u l a v . r. Y u o en y ir. h a t p , ed lue is? r a h e v t d x r d like fo n i o k f t o lo irst oin F w p o r n • ou h y p t lo gra P r u • yo s e o • D→→ ● (2, 5) ● (4, 3)

Draw a diagonal line straight trough both points. • This line is known as the gradient of the straight line. (2, 5) (4, 3)

Now lets have a discussion on what we can observe: We have two ordered pairs, which we need in order to place a line, with all straight line graphs you need at least two ordered pairs to draw a line.

Now lets have a discussion on what we can observe: The Gradient is Negative, thus the decreasing structure of the line •

Now lets have a discussion on what we can observe: What is the formula for a straight line graph? Y=MX+C M= Gradient C = Y intercept X, Y = Ordered pairs