benchmark 2 practice
slope equation
y=mx+b
linear functions (Equation)
An equation is linear if the "X" is plain
Rate of change
How something changes overtime Y/X
function (graph)
Must pass the vertical line test
WHEN YOU ARE GIVEN TWO POINTS YOU MUST USE THE
SLOPE FORMULA
linear functions (graphs)
STRAIGHT LINE
infinitely Many solutions
Same letters (aka slope) Same numbers (plain number) no matter what you plug in - the answer will be the exact same y = 4x + 12 y = 12 + 4x
In slope equation what does the "b" stand for
Y-intercept Y-intercept is always the plain number
slope formula
Y2-Y1/X2-X1
slope
a measure of the steepness of a line
initial value from graph
where the line starts always on the y-axis
exponent rule: multiplying like bases
add exponents
One solution
different letters (aka different slopes) you must solve like normal
Negative slope (visual)
down and to the right
vertical line test
functions tes -Up and down straight line -cannot intersect more than ONCE Your X and Y axis DO NOT COUNT AS AN INTERSECT
functions (ordered pairs)
if no "X" values repeat = function
exponent rules: power to power
multiply indicated by parentheses - and you MUST distribute to every number inside the parenthesis
Slope (graph)
rise/run
No solution
same letter (aka slope) Different numbers happen when the slope cancels out and different numbers are left Y = 4x + 3 Y = 4x +2 3=2
In slope equation what does "m" stand for
slope .. slope is always attached to "x"
exponent rules: dividing like bases
subtracting exponents find the boss
y-intercept
the exact point the line crosses the Y-axis (up and down axis)
positive slope (visual)
up and to the right
scientifc notation
used to describe really big or really small numbers
How do we describe information on a graph
we look at the AXIS!