Fractions A fraction is a part of a whole Slice a pizza, and we get fractions: Equivalent Fractions Some fractions may look different, but are really the same, for example: It is usually best to show an answer using the simplest fraction ( 1/2 in this case ). Numerator / Denominator We call the top number the Numerator, it is the number of parts we have. You just have to remember those names! Adding Fractions It is easy to add fractions with the same denominator (same bottom number): Another example: Adding Fractions with Different Denominators But what about when the denominators (the bottom numbers) are not the same? We must somehow make the denominators the same. In this case it is easy, because we know that 1/4 is the same as 2/8 : But when it is hard to make the denominators the same, use one of these methods (they both work, use the one you prefer): Other Things We Can Do With Fractions We can also: Visit the Fractions Index to find out even more.
Graphing Linear Equations Calculator, Linear Function Calculator Graph the equation: y = x + 3Step 1 : Given equation is in slope-intercept form(y = mx + b) => y = x + 3Step 2 : Slope(m) = 1 and y-intercept(b) = 3.So, coordinate = ( 0, 3)Step 3 : At x = -3=> y = x + 3=> y = -3 + 3 => y = 0At x = 1=> y = x + 3 => y = 1 + 3 => y = 4At x = -2 => y = x + 3 => y = -2 + 3 => y = 1So, all the coordinates are: ( 0, 3), (-3, 0), (1, 4) and (-2, 1) Answer : Graph is shown in step3.Graph the equation: x + y = 4Step 1 : Given equation is in standard form(Ax + By = C) => x + y = 4=> y = -1x + 4Step 2 : Slope(m) = -1 and y-intercept(b) = 4.So, coordinate = ( 0, 4)Step 3 : At x = 4=> y = -x + 4=> y = -4 + 4 => y = 0At x = 1=> y = -x + 4 => y = -1 + 4 => y = 3At x = 2 => y = -x + 4 => y = -2 + 4 => y = 2So, all the coordinates are: ( 0, 4), (4, 0), (1, 3) and (2, 2) Answer : Graph is shown in step3.A hardware shop provides rental service for computers and laptops. The shopkeeper charges 100 dollars per month for renting a computer or laptop.
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