## What is the correct way to write a 4?

The open number four digit lower case letter h upside-down is advised if/when writing the number in one’s own handwriting. Why? In handwriting, the use of a closed four 4 is often very easily confused with the digit 9 . So, to avoid risk for any confusion, write the open version only.

### Do you write out the number 4?

Writing Small and Large Numbers A simple rule for using numbers in writing is that small numbers ranging from one to ten (or one to nine, depending on the style guide) should generally be spelled out. Larger numbers (i.e., above ten) are written as numerals.

#### What is B in standard form?

The “b” value translates the parabola horizontally across the x-axis. If the “b” value is positive, the parabola moves to the left, and if it’s negative the “b” value moves to the right. In the picture seen on the left the “b” value is positive (y=2×2+5x+1), causing the parabola to move left.

**What are the 3 slope formulas?**

There are three major forms of linear equations: point-slope form, standard form, and slope-intercept form.

**How do I find the slope of the line?**

To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .

## What is the standard form of a quadratic equation?

The standard form of a quadratic function is f(x)=a(x−h)2+k. The vertex (h,k) is located at h=–b2a,k=f(h)=f(−b2a).